20499759

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4583}}^1$

素因数の和:4667

約数の個数: 24

約数和(自身を含む): 34324992

約数和(自身を除く): 13825233

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4473, 4583, 13749, 32081, 41247, 96243, 288729, 325393, 976179, 2277751, 2928537, 6833253, 20499759]

約数ペア:

[(1, 20499759), (3, 6833253), (7, 2928537), (9, 2277751), (21, 976179), (63, 325393), (71, 288729), (213, 96243), (497, 41247), (639, 32081), (1491, 13749), (4473, 4583)]